A law enforcement official says the FBI has arrested four people who worked at the Fulton County Jail.
The official told The Associated Press the four were arrested Thursday morning at the Atlanta complex. Anonymity was requested because the official was not authorized to speak publicly.
Fulton County Sheriff's department spokeswoman Tracy Flanagan declined to comment. Details about the arrests were not immediately available.
There have been other recent arrests involving the jail's workers. Lieutenants Robert W. Hill and Earl Glenn were charged in 2009 with using excessive force against an inmate and then lying about it. Glenn pleaded guilty to the charges, and Hill was convicted after a jury trial.
Sheriff Ted Jackson, a former FBI agent elected in 2008, has said he welcomes scrutiny from federal agencies.